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(No Model.)

L. D. CRAIG.

PLUG STOP VALVE. No; 274,724. Patented Mar.27,188B

I v'v V o I & -VI

Inventor.

N4 PETERS. Phuhenrapher. Washinmn. DJ;

' vice represented as attached to and operating struction andarrangement of the various parts,

" UNITED STATES PATENT. OFFIcE.

LEE D. CRAIG, OF SAN FRANCISCO, CALIFORNIA.

PLUG STOP-VALVE.

SPECIFICATION forming part of Letters Patent No. 274,724, dated March27, 1883.

Application filed February 6, 1883.

To all whom it may concern Be it known that I, LEE D. CRAIG, a citizenof the United States, residing in the city and county of San Francisco,State of California, have invented a new and useful Improvement in PlugStop-Valves, of which the following is a specification.

My invention is an improvement in plug stop-valves.

The object of the invention is to provide a simple and effectiveplug-valve adapted to be operated either by hand or, under certain con-.dit-ions, automatically, to allow the escape of water or other liquid. j

The invention consists in the general con all of which are hereinafterdescribed, and the novel features of the invention pointed out in theclaims.

In the accompanying drawings, Figure l is a central vertical section ofthe plug and its seat. Fig. 2 is a plan view of the same, and Fig. 3 isa side elevation of the complete dewithin a tank.

The plug (represented at A) is hollow, with a closed bottom and atruncated cone-shaped wall provided with openings 0 on opposite sides,for a purpose hereinafter explained. Across the open top of the plugextends a piece, C, which supports a thimble or socket, E, referred toagain. A seat, B, of similar taperin g form to the plug A, is made inthe sink or other receptacle in which the plug-valve is to be used, andis adapted to receive such plug, which fits snugly therein. The seat isprovided with openings 0, on opposite sides thereof, similar to theopenings in the plug, with which they register. The openings in the seatmay connect with a discharge-pipe direct; or theymay empty into achamber below the bottom of the receptacle surrounding the outside ofthe seat, and the contents of the receptacle be carried off from thence.

In order to operate the plug by hand, I have provided a key-rod, F,which has a square or polygonal end adapted to a similarly-shapedsocket, D, in the bottom of the thimble E, before mentioned. The keymaybe made larger above this socket to fit a correspondingly-enlargedopening, which tends to give support to the key when being operated. Thekey is provided at its upper end with a cross-bar or may escape.

other suitable form of handle. It will be seen,

(No model.)

therefore,that by turning this handle the open- 5 ings in the plug andseat may be made to register to discharge the contents of the receptaolein which the device is used, and after such discharge a half-turn of thehandle will close the openings, when the key may be removed from thesocket in the plug and be put away for future use.

To providea device by means of which the plug may be made automaticinits operation is another part of my invention, and this I have shown inFig. 3. When automatically operated the openings in the plug are notutilized, but the discharge of the contents of the receptacle effectedby the elevation of the plug clear offits seat. For this purpose I haveprovided the lever G, one end of which is pivoted to the wall of thetank, as at I. It is connected to the flange K of the plug by a yoke, J,which does not interfere with the operation of the device by hand. Onthe other end of the leverG, I place a float markedH. It is obvious fromthis construction that as the contents of the tank or other receptaclerise therein it will float the part H, and consequently lift the plugfrom its seat, when the contents As the contents are discharged thefloat will fall with them and finally close the opening. 7

Of course it is obvious that this device may he used in tanks, sinks,bath-tubs, basins, and in all receptacles where water is collected anddischarged.

Having thus described my invention, what I claim is 1. The combination,with a sink or similar receptacle,.of a plug adapted to close thedischarge-pipe, a pivoted lever, G, connected thereto, and a float, H,whereby the valve of the plug is automatically raised to permit thewater in the sink to escape, substantially as described.

2. The combination of the plug A and its seat (said plug being providedwith a socket,

LEE 1 CRAIG. [LS-1 Witnesses L. N. JAooBs,

G. Bron.

